it says the parallelogram shows as the area of 20 units and has B4 do you know what that is was the missing base ​

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

Ariel is working at a meat packing plant for 5 nights a week. her regular wage is $11 an hour. she earns tine and a half for any overtime hours. this week she worked 9 hours of over time .how much will ariel earn for overtime this week ?